`.^(2)sqrt((81)^(2.5))` = _______

sqrt(3^(2)sqrt(9^(2)sqrt((81)^(2)sqrt(16)^(16)))) =______.

(1)/(sqrt(1-81x^(2)))

sqrt((81(x + y)^(2))/(144(x-y)^(2))) = "_________"

If pcos e ctheta+qcottheta=2 and p^2cos e c^2theta-q^2cot^2theta=5 then the value of sqrt(81 p^(-2)-q^(-2)) is________

If pcos e ctheta+qcottheta=2 and p^2cos e c^2theta-q^2cot^2theta=5 then the value of sqrt(81 p^(-2)-q^(-2)) is________

If pcos e ctheta+qcottheta=2 and p^2cos e c^2theta-q^2cot^2theta=5 then the value of sqrt(81 p^(-2)-q^(-2)) is________

log_3 log_2 log_sqrt3 (81) = ______.

If pcos e ctheta+qcottheta=2 and p^2cos e c^2theta-q^2cot^2theta=5 then the value of sqrt(81 p^(-2)- q^(-2)) is________

sqrt((2704)/(81))=?